Breakdown of ICD-10-CM diagnosis codes and changes for 2022
How often are codebooks updated? When are the new, revised, and deleted codes implemented each year?
Each year on October 1, the upcoming year’s ICD-10-CM and ICD-10-PCS code books are implemented for the following 12 months. All other code books, such as CPT and HCPCS level II, are implemented in the healthcare industry on January 1.
Here is the breakdown. These are effective with dates of service October 1, 2021.
There are now 72,739 total ICD-10-CM codes for FY 2022:
- 153 new codes
- 30 deleted codes
- 22 revised codes
Most of these changes have occurred in the injuries, poisonings, consequences of external causes, musculoskeletal system, digestive system, factors influencing health status and contact with health services and chapters. There are expansions of G92 codes, the addition of F32.A for depression, NOS, and the addition of U09.9 for sequela of COVID-19. “Many excludes 1 code changed to excludes 2 codes,” and also “expansion of existing codes to be specific codes” some index entries had codes changed to correct errors and more appropriately code the condition.
This is not an all-inclusive list of all new codes. It’s a breakdown by Chapter based on highlights:
| Chapters | # of New Codes |
| Chapter 1: Certain Infectious and Parasitic Diseases | 1 |
| Chapter 2: Neoplasms | 3 |
| Chapter 3: Disease of the blood and blood-forming organs and certain disorders involving the immune mechanism | 5 |
| Chapter 4: Endocrine, Nutritional, and Metabolic Diseases | 1 |
| Chapter 5: Mental, Behavioral and Neurodevelopmental disorders | 3 |
| Chapter 6: Diseases of the Nervous System | 10 |
| Chapter 9: Diseases of the Circulatory System | 1 |
| Chapter 11: Diseases of the Digestive System | 13 |
| Chapter 12: Diseases of the Skin and Subcutaneous Tissue | 8 |
| Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue | 23 |
| Chapter 16: Certain Conditions Originating in the Perinatal Period | 9 |
| Chapter 18: Symptoms, signs, and abnormal clinical and laboratory findings, not elsewhere classified | 14 |
| Chapter 19: Injury, poisoning, and certain other consequences of external causes | 45 |
| Chapter 20: External Causes of Morbidity | 3 |
| Chapter 21: Factors influencing health status and contact with health services | 19 |
| Chapter 22: Codes for Special Purposes | 1 |
Sources for this article: AHIMA, AAPC, CMS Guidelines